November 2001
Intermediate to advanced
126 pages
3h
English
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Point-in-Time Recovery
If your database is in archivelog mode, you can do point-in-time recovery. This type of recovery is performed against the entire database and not against a single datafile or tablespace. It should not be confused with tablespace point-in-time recovery (RMAN TSPITR). The following Oracle9i example uses RMAN to restore the datafiles and then uses SQL*Plus to perform a cancel-based recovery:
RMAN>restore database;SQL>recover database until cancel;
Once you have recovered your database to the appropriate point, you can open it for use. Since you are doing a point-in-time recovery, you need to open the database with the resetlogs parameter:
SQL> alter database open resetlogs;Since the logs were reset, it is crucial that an immediate backup be taken of the database. Additionally, if a recovery catalog is being used, a new incarnation of the database has been created and must be made known to the catalog via the reset database command.
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